C509-L_97 Datasheet, PDF (151/290 Pages) Siemens Semiconductor Group – 8-Bit CMOS Microcontroller

On-Chip Peripheral Components
C509-L
6.3.6.2 Interrupt Enable Bits of the Compare/Capture Unit
This section summarizes all CCU related interrupt enable control bits. The interrupt enable bits for
the two compare timers and the compare match and capture interrupt capture are located in the
three SFRs IEN2, IEN3, and EICC1. Note : EICC1 is a mapped SFR (by bit PDIR):
Special Function Register IEN2 (Address 9AH)
Special Function Register IEN3 (Address BEH)
Special Function Register EICC1 (Mapped Address BFH)
MSB
Bit No. 7
6
5
4
3
2
9AH
–
– ECR ECS ECT ECMP
Reset Value : XX0000X0B
Reset Value : XXXX00XXB
Reset Value : FFH
LSB
1
0
– ES1 IEN2
7
6
5
4
3
2
1
0
BEH
–
–
–
– ECT1 ECC1 –
–
IEN3
7
6
5
4
3
2
1
0
BFH EICC17 EICC16 EICC15 EICC14 EICC13 EICC12 EICC11 EICC10 EICC1
The shaded bits are not used for CCU interrupt control.
Bit
ECR
ECS
ECT
ECMP
ECT1
ECC1
EICC17 -
EICC10
Function
COMCLR register compare match interrupt enable
If ECR = 0, the COMCLR compare match interrupt is disabled.
COMSET register compare match interrupt enable
If ECS = 0, the COMSET compare match interrupt is disabled.
Enable compare timer interrupt
If ECT = 0, the compare timer overflow interrupt is disabled.
CM0-7 register compare match interrupt
If ECMP = 0, the CM0-7 compare match interrupt is disabled.
Compare timer 1 overflow interrupt enable
If ECT1 = 0, the interrupt at compare timer 1 overflow is disabled.
Compare timer 1, general capture/compare interrupt enable
This bit enables the interrupt on an capture/compare event in the capture/compare
registers CC10 - CC17. Additionally, the SFR EICC1 must be programmed to
enable the interrupt request. With ECC1=0, the general capture/compare timer 1
interrupt is disabled.
Compare timer 1, specific capture/compare interrupt enable
This bit enables the interrupt on an capture/compare event in the capture/compare
registers CC10 - CC17. When EICC1x=0, the interrupt request flag ICC1x has no
effect on the interrupt unit. EICC17 refers to CC17 etc.
Semiconductor Group
6-73
1997-10-01